Passive cooling techniques for ventilation: an updated reviewDhafer Al-Shamkhee, Anwer Basim Al-Aasam, Ali H.A. Al-Waeli, Ghaith Yahay Abusaibaa and Hazim MoriaRenew. Energy Environ. Sustain., 7 (2022) 23DOI: https://doi.org/10.1051/rees/2022011